Our stay at the Fahsai guesthouse was excellent! The breakfasts were the best we've had at any airbnb/hostel, and the space is very charming. Nitaya's husband was a very pleasant host and showed us how to roast and brew his coffee - delicious! We also made friends with the resident bunny hopping around. The homestay is well marked once you get near the 7-11, and isn't too far from a main road and bus station. It will take about 20 min to get to the city centre by taxi (this was fine with us, we like it a bit quieter).
Do note that Thai beds are harder than you would expect - if you are an american you may be a bit surprised! Otherwise we slept fine, and the mosquito net was much appreciated.
I would absolutely recommend a stay here :)